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8.Features

 

 

© China Daheng Group, Inc. Beijing Image Vision Technology Branch                                                              52 

When  the  pixel  format  is  set  to  Mono8,  the  brightness  value  of  each  pixel  is  8  bits.  The  format  in  the 
memory is as follows: 

Y00 

Y01 

Y02 

Y03 

Y04 

……

 

Y10 

Y11 

Y12 

Y13 

Y14 

……

 

……

 

Among them Y00, Y01, Y02 … are the gray value of each pixel that starts from the first 

row of the image. 

Then the gray value of the second row pixels of the images is Y10, Y11, and Y12…

 

 

Mono10/Mono12 

When the pixel format is set to mono10 or Mono12, each pixel is 16 bits. When Mono10 is selected, the 
effective  data  is  only  10  bits,  the six unused  most  significant  bits  are  filled with  zero.  When  Mono12  is 
selected, the effective data is only 12 bits, the 4 of the MSB 16 bits data are set to zero. Note that the 
brightness value of each pixel contains two bytes, arranged in little-endian mode. The format is as follows: 

Y00 

Y01 

Y02 

Y03 

Y04 

……

 

Y10 

Y11 

Y12 

Y13 

Y14 

……

 

……

 

Among them Y00, Y01, Y02…are the gray value of each pixel that start with the first 

row of the image. The 

first  byte  of  each  pixel  is  low  8  bits  of  brightness,  and  the  second  byte  of  each  pixel  is  high  8  bits  of 
brightness. 

 

BayerRG8 

 

When the pixel format is set to BayerRG8, the value of each pixel in the output image of the camera is 8 
bits. According to the location difference, the three components of red, green and blue are respectively 
represented. The format in the memory is as follows: 

Содержание MARS USB3

Страница 1: ...MARS USB3 Vision Cameras User Manual Version V1 0 1 Date 2020 03 09 China Daheng Group Inc Beijing Image Vision Technology Branch...

Страница 2: ...anch The right is also reserved to modify or change any parts of this manual in the future without prior notification All other trademarks are the properties of their respective owners 2020 China Dahe...

Страница 3: ...ring high resolution high definition and extremely low noise The camera is equipped with standard USB3 0 interface is easy to install and use The MARS family cameras are especially suitable for machin...

Страница 4: ...ration 4 3 1 1 Software Package 4 3 1 2 User Software Interface 4 3 2 Camera Power 5 3 3 Camera Driver Installation 6 3 3 1 System Requirements 6 3 3 2 Driver Installation 6 3 4 Open Device and Start...

Страница 5: ...2 Image Acquisition Control 37 8 2 1 Acquisition Start and Stop 37 8 2 1 1 Acquisition Start 37 8 2 1 2 Acquisition Stop 38 8 2 2 Acquisition Mode 39 8 2 3 Trigger Type Selection 40 8 2 4 Switching T...

Страница 6: ...6 8 4 1 Color Transformation Control 76 8 4 2 Gamma 78 8 4 3 Sharpness 79 8 4 4 Lookup Table 80 8 4 5 Defect Pixel Correction 81 8 5 Image Transmission 81 8 5 1 Calculate Frame Rate 81 8 5 2 USB Inter...

Страница 7: ...uto Create Lut 91 9 1 2 4 Save Lut 92 9 1 3 Precautions 92 9 1 3 1 Read From Device 92 9 1 3 2 Write To Device 93 9 1 3 3 Directory Structure 93 9 2 Frame Rate Calculation Tool 93 10 FAQ 95 11 Revisio...

Страница 8: ...ing screw connectors the MARS series cameras can secure the reliability of cameras deployed in harsh industrial environments Featuring high reliability and high price performance ratio the MARS series...

Страница 9: ...wing and software can be downloaded from the Downloads of DAHENG IMAGING website The relevant contents are as follows Document MARS USB3 Vision Cameras User Manual CAD Technical Drawing DAHENG IMAGING...

Страница 10: ...tro static discharge may damage cameras permanently so use suitable clothing cotton and shoes and touch the metal to discharge the electro static before operating cameras 2 2 Environmental Requirement...

Страница 11: ...er to the samples to develop their own control programs 5 Programmer s Manual This manual is the users programming guide that instructs the users how to configure the programming environment and how t...

Страница 12: ...e GEN i CAM standard GEN i CAM is administered by the European Machine Vision Association EMVA GenICam provides a generic programming interface for all kinds of cameras and devices It provides a stand...

Страница 13: ...e installation package from www daheng imaging com en Downloads 2 Run the installer 3 Follow the instructions of the installation wizard to complete the installation process During the installation pr...

Страница 14: ...V W m2 s V lux s e W m2 s or DN W m2 s The spectral response graphs given by different manufacturers are different Some graphs ordinate is relative sensitivity response and abscissa is wavelength Som...

Страница 15: ...281g Software Windows XP Win7 Win8 Win10 32bit 64bit OS Data Interface USB3 0 Programmable Control Image size gain exposure time trigger polarity flash polarity Conformity CE RoHS FCC USB3 Vision Gen...

Страница 16: ...with opto isolated 2 programmable GPIOs Operating Temp 0 C 45 C Storage Temp 20 C 70 C Operating Humidity 10 80 Power Consumption 4W 5V Lens Mount C Dimensions 62mm 62 mm 50 4mm Weight 281g Software W...

Страница 17: ...g Image Vision Technology Branch 10 4 2 2 Spectral Response Figure 4 1 MARS 1230 23U3C sensor spectral response Figure 4 2 MARS 1230 23U3M sensor spectral response 4 3 MARS 1231 32U3M C 4 3 1 Paramete...

Страница 18: ...4dB Pixel Data Formats Bayer RG8 Bayer RG10 Signal Noise Ratio 40 79dB Synchronization External trigger software trigger I O 1 input and 1 output with opto isolated 2 programmable GPIOs Operating Temp...

Страница 19: ...CMOS Optical Size 1 1 inch Pixel Size 3 45 m 3 45 m Frame Rate 32 1fps 4096 3000 ADC Bit Depth 10bit Pixel Bit Depth 8bit 10bit Shutter Time 24 s 1s Gain 0dB 24dB Pixel Data Formats Mono8 Mono10 Signa...

Страница 20: ...ndows XP Win7 Win8 Win10 32bit 64bit OS Data Interface USB3 0 Programmable Control Image size gain exposure time trigger polarity flash polarity Conformity CE RoHS FCC USB3 Vision GenICam Table 4 4 MA...

Страница 21: ...4 General Specification China Daheng Group Inc Beijing Image Vision Technology Branch 14 Figure 4 4 MARS 1231 32U3M sensor spectral response...

Страница 22: ...flange distance is 17 526 mm in the air The maximum allowed thread length of lens should be less than 11 1mm as shown in Figure 5 2 A longer lens thread will damage camera The color models are equippe...

Страница 23: ...nship between tripod adapter screw length and step thickness of tripod adapter 1 Screw length tripod adapter step thickness spring washer thickness screwing length of camera screw thread Figure 5 3 Sc...

Страница 24: ...adapter step thickness mm Spring washer thickness mm Screwing length of camera screw thread mm M4 8 screw 2 2 1 4 8 M4 10 screw 4 2 1 4 8 If the screw specification and the thickness of the tripod ad...

Страница 25: ...es the influence of invisible light on the image The monochrome models are equipped with a transparent glass The following are their specifications and spectral response Remove IR filter or transparen...

Страница 26: ...image can cover There are mainly 1 2 2 3 1 1 2 1 1 1 4 3 and so on When selecting a lens make sure that the optical size of the lens is not smaller than the COMS sensor size of the digital camera 3 Re...

Страница 27: ...mechanical structure optical axis changes below 10 m The housing is small and compact the minimum outer diameter is only 29 5mm and it can be installed in various limited spaces Easy to install there...

Страница 28: ...o install there are 3 fixing holes on the lens barrel for fixing the iris and focusing The best fixing hole can be selected according to the installation environment Models HN 0619 5M C2 3X HN 0816 5M...

Страница 29: ...camera has been boot loaded but no data is being transmitted Flashing green Data is being transmitted Flashing yellow The camera s initialization failed Table 7 1 Camera status 7 2 USB Port Recommend...

Страница 30: ...amera or other peripherals could burn out 7 3 1 Line0 Opto isolated Input Circuit Hardware schematics of opto isolated input circuit is shown as Figure 7 1 3 3V Line0 Line0 INPUT0 5V 24V 9 1 2 3 4 5 6...

Страница 31: ...internal circuit Signal output Power PWR GND NPN Pull up resistor 9 1 2 3 4 5 6 7 8 12 11 10 Figure 7 2 NPN photosensor connected to opto isolated input circuit 3 3V Line0 Line0 FPGA INPUT0 External...

Страница 32: ...opto isolated input circuit Rising time delay TRIGIN_R_DELAY the time required for the response to the decrease to 0 8V of INPUT0 from 50 rising of LINE0 Falling time delay TRIGIN_F_DELAY the time req...

Страница 33: ...ng time delay tr td 50 s 0 C 45 C parameter description is shown in Figure 7 6 Falling time delay ts tf 50 s 0 C 45 C parameter description is shown in Figure 7 6 Delay time in typical application con...

Страница 34: ...ts the time required from 50 falling of OUTPUT1 to the rise to 10 of the maximum value of LINE1 Rising time tr the time for the response of LINE1 to rise from 10 to 90 of its final value 7 3 3 GPIO 2...

Страница 35: ...voltage 0V 0 6V Line2 3 voltage Logic 1 input voltage 1 9V 24V Line2 3 voltage The status is unstable when input voltage is between 0 6V and 1 9V which should be avoided When input of Line2 3 is high...

Страница 36: ...photoelectric sensor connected to Line2 input circuit When LIine2 3 is configured as input pull down resistor over 1K should not be used otherwise the input voltage of Line2 3 will be over 0 6V and l...

Страница 37: ...y parameters are affected greatly by external voltage and external pull up resistor but little by temperature Output delay time in typical application conditions temperature is 25 C are shown in Table...

Страница 38: ...China Daheng Group Inc Beijing Image Vision Technology Branch 31 EXVCC 5 24V Line2 OUTPUT2 PTC 9 1 2 3 4 5 6 7 8 12 11 10 External circuit Figure 7 11 Internal equivalent circuit of camera when Line2...

Страница 39: ...l trigger the MARS U3 series camera has the external trigger filtering feature including rising edge filtering and falling edge filtering The user can set the trigger filter feature by setting the Tri...

Страница 40: ...efault input line level is false when the camera is powered on indicating that the input line level is not reversed If it is set as true indicating that the input line level is reversed As shown in th...

Страница 41: ...lay time Exposure time Figure 8 4 Strobe signal schematic diagram UserOutput In this mode the user can set the camera s constant output level for special processing such as controlling the constant li...

Страница 42: ...Wait signal can be used to optimize the acquisition of the trigger image and to avoid excessive triggering It is recommended to use the TriggerWait signal only when the camera is configured for extern...

Страница 43: ...nd images are transferred the AcquisitionTriggerWait signal will be pulled high Signal 2 Signal1 Image1 Trigger Signal AcquisitionTriggerWait Signal Output Image Image2 Image4 Image3 Image5 Image6 Fig...

Страница 44: ...sion 8 1 3 Read the LineStatus 1 Read the level of single line The MARS U3 series camera can get the line s signal status When the device is powered on the default status of Line0 and Line1 is false a...

Страница 45: ...isitionStart command The frame rate is determined by the exposure time ROI and some other parameters Trigger Acquisition Exposure Reading out Start Status Trigger Figure 8 11 Trigger acquisition proce...

Страница 46: ...g Complete stop Reading out Stop command Stop time Exposure Ignored Figure 8 13 Acquisition stop during blanking After the camera transferred a whole frame the camera goes into wait state When user se...

Страница 47: ...l it can acquire a frame of image until the AcquisitionStop command is executed It is not necessary to execute the AcquisitionStart command every time 2 When the trigger mode is set to On the trigger...

Страница 48: ...mage Transmission Trigger Signal frame2 frame2 frame1 frame3 frame5 frame4 frame6 Figure 8 15 FrameBurstStart trigger FrameStart trigger mode and FrameBurstStart trigger mode are selected at the same...

Страница 49: ...mode Trigger Frame Continuous mode Trigger Continuous Frame 1 2 3 4 frame1 frame2 frame3 frame4 frame5 frame6 frame7 Figure 8 17 Switch trigger mode during frame reading out As shown in Figure 8 17 th...

Страница 50: ...ontinuous mode It is also not active until the 5th frame is finished it should wait a complete frame The camera switches from trigger mode to continuous mode at point 4 and then the camera works in co...

Страница 51: ...igger delay time is zero 8 2 7 External Trigger Acquisition and Configuration External trigger acquisition configuration The camera supports external trigger acquisition mode Three steps followed shou...

Страница 52: ...ue is generally in the range of several to several tens of s The delay is mainly affected by the connection mode driving intensity and temperature When the external environment is constant the delay i...

Страница 53: ...e sensor are exposed at the same time and then the sensor will read out the image date one by one The advantage of the global shutter is that all the lines are exposed at the same time and the images...

Страница 54: ...quisition The time width of the flash signal can be got by the following formula T T 1 T Setting the exposure time The MARS U3 series camera supports setting the exposure time step 1 s The exposure ti...

Страница 55: ...two exposure modes Overlapping exposure and non overlapping exposure The user cannot assign the overlapping exposure or non overlapping exposure directly it depends on the frequency of trigger signal...

Страница 56: ...the Nth frame image is reading out the N 1th frame image has been started exposure The formula of overlapping exposure frame period overlapping exposure frame period exposure time readout time Time Ov...

Страница 57: ...s the response curve of the camera changes as shown in Figure 8 26 The horizontal axis represents the output signal of the sensor in the camera and the vertical axis represents the gray value of the o...

Страница 58: ...odel and whether the camera is monochrome or color The following table shows the pixel format supported by the camera Model Pixel Format MARS 1230 23U3M C Mono8 Mono12 BayerRG8 BayerRG12 MARS 1231 32U...

Страница 59: ...ificant bits are filled with zero When Mono12 is selected the effective data is only 12 bits the 4 of the MSB 16 bits data are set to zero Note that the brightness value of each pixel contains two byt...

Страница 60: ...12 the value of each pixel in the output image of the camera is 16 bits According to the location difference the three components of red green and blue are respectively represented The format in the m...

Страница 61: ...st byte is the low 8 bits of the pixel value and the second byte is the high 8 bits of the pixel value 8 3 3 ROI By setting the ROI of the image the camera can transmit the specific region of the imag...

Страница 62: ...portion will be used for auto function control AAROI is defined by the following way AAROIOffsetX The offset of the X axis direction AAROIOffsetY The offset of the Y axis direction AAROIWidth The widt...

Страница 63: ...An example for the relative position between the ROI and the current image 8 3 4 2 Auto Gain The auto gain can adjust the camera s gain automatically so that the average gray value in AAROI is achieve...

Страница 64: ...8bit pixel data the expected gray value range is 0 255 and for 12bit pixel data the expected gray value range is 0 4095 The camera adjusts the exposure time in the range minimum exposure time maximum...

Страница 65: ...is AWBROIOffsetX 100 AWBROIOffsetY 50 AWBROIWidth 640 AWBROIHeight 480 The relative position of the ROI and the image is shown in Figure 8 28 ROI 1024 1000 ROI 640 480 100 50 Figure 8 28 An example f...

Страница 66: ...bit The lookup table can be a linear lookup table or a non linear lookup table The typical linear lookup table implements the selection of 8 bits and Figure 8 29 is an example of the linear lookup tab...

Страница 67: ...ge all the pixels gray values are the same in the frame In the adjacent frame the gray value of the next frame increases by 1 compared to the previous frame until to 255 and then the next frame gray v...

Страница 68: ...eturns to 0 The first pixel gray value of adjacent column increases by 1 until the last column When the pixel gray value increases to 255 the next pixel gray value returns to 0 Compared to the moving...

Страница 69: ...fy the effective configuration parameters The effective parameters are stored in volatile memory of the camera so when the camera is reset or powered on again the effective configuration parameters wi...

Страница 70: ...Height BalanceRatio R G B LUT Load parameters UserSetLoad Load the vendor default configuration parameters or the user configuration parameters into the effective configuration parameters After this o...

Страница 71: ...f the user defined name of each camera otherwise an exception will occur when the camera is opened 8 3 10 Timestamp The timestamp feature counts the number of ticks generated by the camera s internal...

Страница 72: ...ning factor are both set to 2 the camera combines the adjacent 4 sub pixels of the same color according to the corresponding positions and outputs the combined pixel values as one sub pixel R G B G R...

Страница 73: ...balance ROI will change The changed value is the original value the value before the setting divided by the Binning factor For example assume that you are using a camera with a 1200 x 960 sensor Horiz...

Страница 74: ...4 skips rows 5 and 6 and so on Figure 8 39 Mono camera vertical Decimation Figure 8 40 Color camera vertical Decimation As a result the image height is reduced For example enabling vertical Decimatio...

Страница 75: ...n factor Depending on your camera model the following values are available 1 Disable Decimation 2 Enable Decimation Considerations When Using Decimation 1 Effect on ROI settings When you are using Dec...

Страница 76: ...ical Decimation value is set to a value other than 1 the vertical Binning feature cannot be used 8 3 13 Reverse X and Reverse Y The Reverse X and Reverse Y features can mirror acquired images horizont...

Страница 77: ...relative to the sensor remains the same Therefore the camera acquires different portions of the image depending on whether the Reverse X or the Reverse Y feature are enabled Figure 8 49 The original i...

Страница 78: ...l Shift To configure the digital shift factor enter the expected value for the DigitalShift parameter By default the parameter is set to 0 i e digital shift is disabled When the DigitalShift parameter...

Страница 79: ...d over triggering To determine if the camera is currently waiting for trigger signals a Set the AcquisitionStatusSelector parameter to the expected trigger type Two trigger types are available FrameTr...

Страница 80: ...r certain use cases you may want to specify parameter values outside of the factory limits You can use the remove parameter limits feature to expand the parameter range The features of the extended ra...

Страница 81: ...ear after the camera is powered off 8 3 19 Timer The camera only supports one timer Timer1 which can be started by a specified event or signal only ExposureStart signal is supported The Timer can conf...

Страница 82: ...ls of the counter statistics refer to the signals that have been triggered for filtering without a trigger delay If CounterValue is enabled the statistical data can be inserted into the frame informat...

Страница 83: ...us all the other RGB values that are read can be converted to the standard RGB values by using the mapping table created by the 24 colors 1 Prerequisites For the color transformation to work properly...

Страница 84: ...eature uses a transformation matrix to deliver modified red green and blue pixel data for each pixel The transformation is performed by premultiplying a 3 x 1 matrix containing R G and B pixel values...

Страница 85: ...e to the brightness value of each pixel according to the following formula red pixel value R of a color camera shown as an example The maximum pixel value Rmax equals e g 255 for 8 bit pixel formats 1...

Страница 86: ...one of the following Gamma correction modes User The Gamma correction value can be set as expected sRGB The camera s internal default Gamma correction value This feature is used with the color transfo...

Страница 87: ...em in the camera to avoid time consuming calculations The camera itself has a factory default lookup table and the default lookup table does not affect image luminance 2 Creating the user defined LUT...

Страница 88: ...lower intensity value than their neighboring pixels outlier pixels and adjusts their intensity value The defect pixels affect the visual experience and further image processing The MARS series cameras...

Страница 89: ...urrent device acquisition bandwidth the current device acquisition bandwidth will be reduced to the limit of the DeviceLinkThroughputLimit the current device acquisition bandwidth can be read from the...

Страница 90: ...the pixel format is Mono12 or BayerRG12 the row period unit us Trow 1044 37 5 27 84 The camera acquisition time unit s Tacq height 34 Trow MARS 1231 32U3M C When the pixel format is Mono8 or BayerRG8...

Страница 91: ...e effective information contained in each event is shown in Table 8 9 No Event Type Information 1 ExposureEnd Event Event ID Frame ID Timestamp 2 BlockDiscard Event Event ID Frame ID Timestamp 3 Frame...

Страница 92: ...software trigger signal if the front end sensor is exposing it will not be able to respond to the new FrameTrigger signal then the camera will send a FrameStartOvertrigger event to the host Note that...

Страница 93: ...alaxyView exe After opening the device that you want to operate through this software you can open LUT Create Tool from the menu bar plugin list With the plugin you can achieve the following functions...

Страница 94: ...n again you need to select Write To Device The Lut parameter will be written to the UserSet0 After the device is powered on again select the Read From Device in the GroupBox to load the UserSet0 and r...

Страница 95: ...dard Lut 2 Read From Device When you select read from device the tool will automatically load UserSet0 and then load the Lut saved by the device If the device supports LUTEnable it will automatically...

Страница 96: ...effects are updated to the lookup table in the device When selecting the standard Lut or default Lut and selecting Write To Device then when reading the written parameters will be updated to the GUI...

Страница 97: ...or default Lut and auto create Lut the widget interface will update the parameters stored when saving Lut the updated parameter values include Lut range Gamma brightness contrast and the values selec...

Страница 98: ...s Failure to follow the format when manually modifying will result in failure to read the file 5 Default The default option is the Lut data when the device is shipped from the factory and is the initi...

Страница 99: ...er values together in the file Reading the file again will restore the saved case If written to the device the MARS U3 cameras will save and restore the parameter 9 1 2 4 Save Lut The group contains t...

Страница 100: ...se the Write to Device function with caution 9 1 3 3 Directory Structure When reading writing Lut and Auto Creat Lut you need to rely on some files in the installation package directory so do not arbi...

Страница 101: ...on and whether the maximum value can be reached depends on whether the camera is affected by other acquisition parameters 8 AcquisitionFrameRateMode indicates whether frame rate control is enabled On...

Страница 102: ...ed the camera 5 Fail to open device it shows that This device can only be operated on an USB3 0 Port 1 Please check whether the camera is connected to USB2 0 port or USB2 0 HUB Be sure to connect the...

Страница 103: ...10 FAQ China Daheng Group Inc Beijing Image Vision Technology Branch 96 9 Camera crashes on Advantech AIIS 1440 IPC 1 Be sure the driver version of AMD USB controller is later than 2 20...

Страница 104: ...Vision Technology Branch 97 11 Revision History No Version Changes Date 1 V1 0 0 Initial release 2019 09 25 2 V1 0 1 Modify Figure 1 1 Figure 7 6 and Figure 8 9 Rename MARS 1230 23U3x and MARS 1231 32...

Страница 105: ...x 010 82563343 Email isales deheng imaging com 2 Shanghai Office Tel 021 35312826 Fax 021 65201839 128 Email shanghai daheng imaging com 3 Shenzhen Office Tel 0755 83479565 Fax 0755 82044020 E mail sh...

Страница 106: ...g Image Vision Technology Branch 99 Email xian daheng imaging com 12 2 Contact Support If you have any questions in using DAHENG IMAGING products please contact the experts on our support team Tel 400...

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